CN220488284U - Stuffing box sealing structure - Google Patents
Stuffing box sealing structure Download PDFInfo
- Publication number
- CN220488284U CN220488284U CN202223246584.XU CN202223246584U CN220488284U CN 220488284 U CN220488284 U CN 220488284U CN 202223246584 U CN202223246584 U CN 202223246584U CN 220488284 U CN220488284 U CN 220488284U
- Authority
- CN
- China
- Prior art keywords
- packing
- sleeve
- packing box
- steel wire
- shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 title abstract description 22
- 238000012856 packing Methods 0.000 claims abstract description 38
- 230000006835 compression Effects 0.000 claims abstract description 21
- 238000007906 compression Methods 0.000 claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 235000014676 Phragmites communis Nutrition 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 18
- 244000273256 Phragmites communis Species 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims 1
- 239000000945 filler Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Abstract
The utility model discloses a stuffing box sealing structure. The packing box comprises a packing box sleeve sleeved on the periphery of a shaft and a pressing piece coaxially arranged with the packing box sleeve, wherein an annular groove surrounding the periphery of the shaft is formed in the packing box sleeve, packing pressed on the outer circumferential surface of the shaft is arranged in the annular groove, a pressing end capable of pressing the packing and a serial connection hole for connecting a pressing bolt in series are formed in the pressing piece, a threaded hole is formed in the packing box sleeve, a steel wire screw sleeve can be arranged in the threaded hole, and the pressing bolt is connected to the steel wire screw sleeve through the serial connection hole. The advantages are that: the screw nut has the advantages that reliable sealing is conveniently achieved, tightness of the filler can be effectively controlled, reliable screwing between the nut and the compression bolt can be guaranteed, meanwhile, the locking function of the steel wire screw sleeve is utilized, the screw connection is guaranteed not to loosen in the working process, long-time sealing performance is guaranteed, usability is effectively guaranteed, and in addition, the screw nut is firm in locking, and the anti-loosening effect is better.
Description
Technical Field
The utility model relates to a sealing structure for sealing elements such as shafts, in particular to a stuffing box sealing structure for sealing a sealed element with certain axial displacement.
Background
In some shaft parts needing sealing, especially in some occasions needing sealing of sealed elements with certain axial displacement, stuffing box is usually needed to seal, and existing stuffing box sealing structures usually directly compress stuffing between shaft holes by using a compressing structure, so that the sealing reliability of the simple sealing mode is poor, and particularly loosening or abrasion is easy to occur after relative movement of parts, thereby causing leakage problem.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a stuffing box sealing structure which is reliable in sealing and difficult to loosen, so that the leakage problem can be effectively avoided.
In order to solve the technical problems, the packing box sealing structure comprises a packing box sleeve sleeved on the periphery of a shaft and a pressing piece coaxially arranged with the packing box sleeve, wherein an annular groove surrounding the periphery of the shaft is arranged on the packing box sleeve, packing pressed on the outer circumferential surface of the shaft is arranged in the annular groove, a pressing end capable of pressing the packing and a serial connection hole for serial connection of a pressing bolt are arranged on the pressing piece, a threaded hole is formed in the packing box sleeve, a steel wire threaded sleeve can be arranged in the threaded hole, and the pressing bolt is connected to the steel wire threaded sleeve through the serial connection hole.
The compressing piece is used as the compressing end by an annular disc sleeved on the periphery of the shaft and a compressing ring arranged on the inner circumferential edge of the annular disc.
The end face of the compression ring is of an inclined plane structure.
The steel wire thread sleeve is composed of a plurality of metal spiral reeds with diamond-shaped cross sections, the outer surfaces of the metal spiral reeds form external thread structures for screwing in threaded holes, and the inner surfaces of the metal spiral reeds form internal thread structures for screwing with compression bolts.
The end face shape of at least one circle of the metal spiral reed is of a hexagonal structure.
The end faces of the circle of metal spiral reed at the middle part and the circle of metal spiral reed at the lower part are all hexagonal structures.
After adopting foretell structure, when compressing tightly the filler through the compression end of compressing tightly the piece, the compression bolt who establishes ties on the wire thread insert that has been settled in the stuffing box cover and the compressing tightly piece is connected ingeniously, thereby can not only conveniently realize reliable sealing, and through the screw-in degree of depth of compression bolt, can the tight degree of elasticity of effectual control filler can ensure again that reliable screw up between nut and the compression bolt, the locking function that the wire thread insert had has simultaneously, can guarantee that threaded connection does not loosen in the course of the work, guaranteed long-time sealing performance, also effectively guaranteed performance, in addition, the clamping ring that comprises metal spiral reed through the two rings that wire thread insert middle part and lower part set up, the locking is firm, and locking effect is better.
Drawings
FIG. 1 is a schematic structural view of a stuffing box seal of the present utility model;
fig. 2 is a schematic perspective view of a wire thread insert according to the present utility model.
Detailed Description
The stuffing box seal structure of the present utility model will be described in further detail with reference to the accompanying drawings and detailed description.
As shown in the figure, the packing box sealing structure comprises a packing box sleeve 2 sleeved on the periphery of a shaft 1 and a pressing piece 3 coaxially arranged with the packing box sleeve 2, wherein an annular groove surrounding the periphery of the shaft 1 is arranged on the packing box sleeve 2, the rear part of the annular groove is a closed end, the front part of the annular groove is an open end, a packing 4 pressed on the outer circumferential surface of the shaft 1 is arranged in the annular groove, as seen in fig. 1, the pressing piece 3 is composed of an annular disc 8 and a pressing ring arranged on the inner circumferential edge of the annular disc, the end face of the pressing ring is of an inclined surface structure which is obliquely extended from the outer surface of the shaft 1 to the rear part (the left side shown in fig. 1 is defined as the rear part) of the packing box sleeve 2, thereby the sealing effect can be improved by using the pressing ring as a pressing end 5 pair of packing, a series connection hole for connecting a pressing bolt 6 is arranged on the annular disc 8, a threaded hole corresponding to the series connection position is arranged on the packing box sleeve 2, a steel wire screw 7 can be arranged in the threaded hole, and the pressing bolt 6 is connected on the steel wire screw 7 through the series connection hole.
Further, the steel wire screw sleeve 7 is composed of a plurality of rings of metal spiral reeds with diamond-shaped cross sections, locking rings are respectively connected with each other, an external thread structure for screwing in a threaded hole of the packing box sleeve is formed on the outer surface of each ring of metal spiral reeds, an internal thread structure for screwing in a compression bolt is formed on the inner surface of each metal spiral reed, the steel wire screw sleeve 7 and the packing box sleeve 2 are connected into a whole during installation, then packing and the compression piece 3 are installed, one end of the compression bolt is connected with the compression piece 3, the other end of the compression bolt is connected with the steel wire screw sleeve 7, and a plurality of layers of packing are compressed by pressing the compression bolt, so that the packing radially expands, and the sealing effect is achieved.
Still further, the end face shapes of the round of metal spiral reed at the middle part and the round of metal spiral reed at the lower part are hexagonal structures, namely: two hexagonal locking rings (the diameter of the inscribed circle of the locking ring is smaller than the inner diameter of the inner thread) are arranged at the middle part and the lower part of the steel wire screw sleeve 7, when the compression bolt is screwed into the inner threaded hole of the steel wire screw sleeve 7, the locking rings of the hexagonal structure which do not enter the middle part are loosened, when the compression bolt enters the locking rings of the hexagonal structure, the polygon is required to be spread, the locking edge is deformed, the friction force given to the compression bolt by the locking edge is required to be overcome when the compression bolt is screwed, and the friction force can prevent the compression bolt from loosening after the compression bolt is screwed, so that the purpose of locking is achieved.
Claims (6)
1. The utility model provides a packing box seal structure, includes with cover dress at the peripheral packing box cover (2) of axle (1) and with packing box cover (2) coaxial setting compress tightly piece (3), its characterized in that: the packing box sleeve (2) is provided with an annular groove which is positioned around the periphery of the shaft (1), a packing (4) which is pressed on the outer circumferential surface of the shaft (1) is arranged in the annular groove, the packing (3) is provided with a packing end (5) which can pack the packing and a serial connection hole for connecting a packing bolt (6) in series, the packing box sleeve (2) is provided with a threaded hole, a steel wire screw sleeve (7) can be arranged in the threaded hole, and the packing bolt (6) is connected onto the steel wire screw sleeve (7) through the serial connection hole.
2. The stuffing box seal of claim 1, wherein: the compressing piece (3) is used as the compressing end by an annular disc (9) sleeved on the periphery of the shaft (1) and a compressing ring arranged on the inner circumferential edge of the annular disc.
3. The stuffing box seal of claim 2, wherein: the end face of the compression ring is of an inclined plane structure.
4. A stuffing box seal according to claim 1, 2 or 3, wherein: the steel wire thread sleeve (7) is composed of a plurality of rings of metal spiral reeds with diamond-shaped cross sections, the outer surfaces of the metal spiral reeds form external thread structures for screwing in threaded holes, and the inner surfaces of the metal spiral reeds form internal thread structures for screwing with compression bolts.
5. The stuffing box seal of claim 4, wherein: the end face shape of at least one circle of the metal spiral reed is a hexagonal structure (8).
6. The stuffing box seal of claim 5, wherein: the end faces of the circle of metal spiral reed at the middle part and the circle of metal spiral reed at the lower part are all hexagonal structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223246584.XU CN220488284U (en) | 2022-12-05 | 2022-12-05 | Stuffing box sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223246584.XU CN220488284U (en) | 2022-12-05 | 2022-12-05 | Stuffing box sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220488284U true CN220488284U (en) | 2024-02-13 |
Family
ID=89831989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223246584.XU Active CN220488284U (en) | 2022-12-05 | 2022-12-05 | Stuffing box sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220488284U (en) |
-
2022
- 2022-12-05 CN CN202223246584.XU patent/CN220488284U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |